<template>
  <div class="login_container">
    <div class="login_box">
      <!-- 头部 -->
      <div class="avatr_box">
        <img src="../assets/logo.png" alt="" />
      </div>
      <!-- 表单区域 -->
      <el-form ref="loginformRef" :model="login_form" label-width="0" class="login_form" :rules="loginFormRules"
      >
        <!-- 用户名 -->
        <el-form-item  prop="username">
          <el-input
            prefix-icon="el-icon-s-custom" v-model="login_form.username" ></el-input>
        </el-form-item>
        <!-- 密码 -->
        <el-form-item  prop="password" >
          <el-input
            prefix-icon="el-icon-unlock"
            v-model="login_form.password"
            type="password"
          ></el-input>
          <!-- 登录 重置区域 按钮区域 -->
        </el-form-item>
        <el-form-item class="buts">
          <el-button type="primary" @click="login">登录</el-button>
          <el-button type="info" @click="restLoginform">重置</el-button>
        </el-form-item>
      </el-form>
    </div>
  </div>
</template>
<script>
export default {
  data () {
    return {
      // 登录表单的数据对象
      login_form: {
        username: 'admin',
        password: '123456'
      },
      // 表单验证规则对象
      loginFormRules: {
        // 验证用户名是否合法
        username: [
          { required: true, message: '请输入用户名称', trigger: 'blur' },
          { min: 3, max: 12, message: '长度在 3 到 12 个字符', trigger: 'blur' }
        ],
        // 验证密码是否合法
        password: [
          { required: true, message: '请输入密码', trigger: 'blur' },
          { min: 6, max: 12, message: '长度在 6 到 12 个字符', trigger: 'blur' }
        ]
      }
    }
  },
  methods: {
    // 点击重置按钮，重置登录表单
    restLoginform () {
      this.$refs.loginformRef.resetFields()
    },
    // 登录
    login () {
      this.$refs.loginformRef.validate(async valid => {
        if (!valid) {
          return false
        }
        const { data } = await this.$http.post('login', this.login_form)
        console.log(data)
        if (data.meta.status !== 200) {
          this.$message.error('错了哦，这是一条错误消息')
          return
        }
        this.$Message({
          message: '恭喜你，登录成功',
          type: 'success'
        })
        window.sessionStorage.setItem('token', data.data.token)
        this.$router.push('/home')
      })
    }
  }

}
</script>
<style lang="less" scoped>
.login_container {
  background-color: #2b4b6b;
  height: 100%;
}
.login_box {
  width: 450px;
  height: 300px;
  background-color: #fff;
  border-radius: 3px;
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  .avatr_box {
    height: 130px;
    width: 130px;
    border: 1px solid #eee;
    border-radius: 50%;
    padding: 10px;
    box-shadow: 0 0 10px #ddd;
    position: absolute;
    left: 50%;
    transform: translate(-50%, -50%);
    background-color: #fff;
    img {
      width: 100%;
      height: 100%;
      border-radius: 50%;
      background-color: #ddd;
    }
  }
  .login_form {
    position: absolute;
    bottom: 0;
    width: 100%;
    padding: 0 20px;
    box-sizing: border-box;
  }
  .buts {
    display: flex;
    justify-content: flex-end;
  }
}
</style>
